Our group is the team leader company of jack working team in National Technical Committee 227 on Lifting
Appliance of Standardization Administration of China ( SAC/TC 227 ). Our group drafted a national standard
GB/T27697-2011 for hydraulic bottle jack and three industry standards, JB/T5315-2008 for garage hydraulic
jack, JB/T2592-2008 for screw jack and JB/T2104-2002 for hydraulic jack.
As of the end of June 2016, Tongrun has more than 180 existing patents, including over 10 overseas patepatents, which have covered all felds of hydraulic lifting equipments. A number of inven-nts and 40 invention
tion patents are keeping global leading technology.
|US patent certificate||Chinese patent certificate|